單項選擇題

A turbocharged, four-stroke/cycle diesel engine has a larger valve overlap than a naturally aspirated four-stroke/cycle diesel engine, in order to in crease the （）.

A.temperature of the exhaust gases
B.energy supplied to the turbocharger
C.air pressure to the intake manifold
D.purge of exhausted gases from the cylinders

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單項選擇題

A change in the quality of fuel atomization by a diesel engine fuel injector would be caused by a/an （）

A.increase in engine speed
B.increase in cylinder turbulence
C.leaking needle valve
D.reduction in cylinder turbulence

單項選擇題

While maneuvering, you discover heavy smoke coming from the turbocharger casing, you should （）

A.check the air filter for dirt
B.check for an exhaust leak
C.check the cooling water temperature
D.notify the bridge that you are going to shut the engine down